Ova & Parasite Exam, Fecal (Immunocompromised or Travel History)
2002272
Ordering Recommendation
Do not order unless patient has defined risk factor and at least 3 days of persistent diarrhea. Do not order for patients who develop diarrhea during an inpatient stay.
Submit With Order
Mnemonic
OPFEC
Methodology
Qualitative Concentration/Trichrome Stain/Microscopy
Performed
Sun-Sat
Reported
3-7 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Specimens analyzed to determine the efficacy of treatment should be collected three to four weeks after completion of therapy. Antibiotics may affect results of exam.  
Collect
Stool. Recommended collection: 3 separate stool specimens within a 10-day period (an individual order must be submitted for each specimen).  
Specimen Preparation
Preserve each stool collection in 10% formalin AND modified PVA (ARUP Supply #16355) within one hour of collection. Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787.  
Storage/Transport Temperature
Room temperature.  
Unacceptable Conditions
Rectal swabs. Multiple specimens (more than one in 24 hours). Unpreserved specimens. Specimens containing barium, oil, or urine.  
Remarks
Indicate suspected parasites.  
Stability
Ambient: 9 months; Refrigerated: 9 months; Frozen: Unacceptable  
Reference Interval
Negative
Interpretive Data
Method for identification of Ova and Parasites includes wet mount and trichromes stain.

Stool antigen testing is the optimal test method for determining the parasitic presence of Giardia, Cryptosporidium spp, or Entamoeba histolytica. The ova and parasite exam does not specifically detect Cryptosporidium, Cyclospora, Cystoisospora, and Microsporidia. For Cryptosporidium, refer to Cryptosporidium Antigen by EIA (ARUP test code 0060045). For Cyclospora and Cystoisospora, refer to Parasitology Stain by Modified Acid-Fast (ARUP test code 0060046). For Microsporidia, refer to Microsporidia Stain (ARUP test code 0060050).
Note
For Ova and Parasite exams from non-stool sources, refer to Ova and Parasite Exam, Body Fluid or Urine (ARUP test code 2002277). For Cryptosporidium, Cyclospora and Cystoisospora stains, refer to Parasitology Stain by Modified Acid-Fast (ARUP test code 0060046). For macroscopic parasite identification (worms or proglottids), refer to Parasite Examination, Macroscopic (ARUP test code 2007361).
CPT Code(s)
87177; 87209
Components
Component Test Code*Component Chart Name
2002274Ova and Parasite, Trichrome Stain
2002275Ova and Parasite, Wet Mount
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Cross References
  • Parasitic Exam
  • Ascaris
  • Chlonorchis sinensis
  • Eggs or Cysts
  • Fasciola
  • Giardia Exam
  • Helminths
  • Isospora, Isospora belli, Cystoisospora
  • O and P
  • Opisthorchis sinensis
  • Parasites
  • Parasitic examination, stool
  • parasitic worms
  • Parasitology Examination
  • Protozoa
  • S. haematobium
  • S. japonicum
  • Sarcocystis
  • Schistosoma mansoni
  • Strongyloides